- #97 [cat2013], 23-03-01 22:15
- #96 [RichardKBChan], 23-03-01 20:48屏壓=1850V
屏流多少=250mA
個屏極咁紅 is normal for 833a tubes
Dr. Chan
最後修改時間: 2023-03-01 20:49:24 - #95 [Cat2013], 23-03-01 16:49#82 ,師兄
請問屏壓?屏流多少?
因為見個屏極咁紅 ,會否縮短壽命? -
- #94 [Chinglan], 23-02-28 09:51#93 師兄若果搞試聽會,我報名
- #93 [RichardKBChan], 23-02-28 08:04I changed the 6SL7 tube into different model and
finally found the best sound by using WE-5755
great improvement with the cheapest cost. - #92 [cat2013], 23-02-27 21:53!
- #91 [RichardKBChan], 23-02-23 10:20The 833a monoblock SET is absolutely much better sound than any others tube amps on my hand, of course my Mark Levinson solid state amplifers are sleeping long time ago.
including Octave KT170 x 4 push pull, WE212 50 watts SET,
meanwhile I am trying replace all tubes with better tubes one by one to see how much can be improved.
As long as the monoblock SET has enough power to drive the speakers, there is no way that the push pull will sound better. I am now using one pair of 15inches full range speakers and never heard such a great hifi sound before in my life.
Dr. Chan
最後修改時間: 2023-02-23 10:28:25 - #90 [niceday009], 23-02-22 22:20Dr. Chan
你部833推挽或是部833單端靚声D?. - #89 [Chinglan], 23-02-22 21:34#88. 謝謝師兄。
- #88 [RichardKBChan], 23-02-22 21:04i have several pairs from different countries,
let me try and report which pair will be the best sound
Dr Chan - #87 [Chinglan], 23-02-22 18:37#86 請問師兄833a 是用甚麽產地,大陸?美國?
(我見它的屏好似係石墨屏的833C) - #86 [RichardKBChan], 23-02-22 15:34
Completed monoblock with tubes
6SL7 + 300B + 833a = 100 Watts output SET pure class A
Sound so powerful and hifi
Dr. Chan
最後修改時間: 2023-02-22 15:34:53 - #85 [Cat2013], 23-02-15 20:03#83
唔用負回輸定位聲音走向喇叭前
愚見 - #84 [niceday009], 23-02-14 23:55DHT 用負回輸係有以下声音問題
如果想單端机低音結實D唔應該用NFB, 應該用高K数Primary output 牛,以及用强力driver tube 推833 - #83 [niceday009], 23-02-14 23:21愚見認為直熱三極胆單端机用負回輸係次一等級声音
最後修改時間: 2023-02-14 23:48:45 - #82 [RichardKBChan], 23-02-12 17:03DIY 做好後會測試唔同的設定、有興趣可以一齊參與、估計兩星期內可以試聽後再微調
100watt 純甲SET 應該好好聲、我現時已經有50watt 212 SET和130watt KT170 push pull
可以即時比較一下唔同線路的音色 - #81 [niceday009], 23-02-12 00:30#80 想靚声唔好用loop負回輸
- #80 [RichardKBChan], 23-02-11 17:43我停咗DIY差唔多有6年又見手頭上有好多833a膽和零件
決定重新再造一對833a膽後級 100瓦x2
最後決定用 6SL7 + 300b + 833a
B+ 約1800~2000 Vdc
希望盡快可以有得玩
Dr Chan - #79 [niceday009], 22-08-01 23:04非結晶磁心我係試過声音動態及清晰度最好,比permalloy 更好,同一体積用非晶芯繞少三份一圈數可以得到Z11同一电感值
用於動圈唱頭放大非晶係比其他磁芯更出色,以前SONY 有一糸列動圈唱頭升压牛,有鈹膜合金型號亦有非結晶磁心,我兩款都買過,但非結晶型號動態分析力贏好多
最後修改時間: 2022-08-01 23:11:42 - #78 [thomasc2], 22-08-01 22:29利害! 合金片至可以做到140H @ 1KHz, 用普通Z10, Z11矽鋼片好難, 而且 80 Ohm DCR亦非常優異, 你呢對牛極豪華, 多年前聽位本地有生產一款用合金輸出牛300B的老闆講, 淨個牛芯成本都要過萬, 多年前有人買對名牌300B合金牛, HK$6位數字, 近年聽聞合金片仲越來越貴, for 833A的還要大幾倍, 我想都唔敢想, 做成商品的話 一部BM dup 3系列應該走唔甩
Thanks again!
最後修改時間: 2022-08-01 22:30:49 - 下一頁 (3 of 7)
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首先多謝回覆,
可否供開電源線路圖參考?
(為裘強大輸出調較至250ma個人唔值﹚